Why is it endangered? L. tasmanica is endangered because it only occurs naturally in one small area in the world. The total wild plant population is around 500 individuals all restricted to one disease and fire prone area. Kings lomatia (Lomatia tasmanica) occurs as a single population in Tasmania's remote southwest within the Wilderness World Heritage Area.
It is a Tasmanian endemic, first recorded by miner and naturalist, Deny King in 1937 at New Harbour but this population seems to have since disappeared. During the 1960's Deny sent specimens of the plant to the Tasmanian Herbarium to be identified and so it became known to science. Its common name "Kings lomatia" is in honour of the man who discovered it.
Why are these plants unable to sexually reproduce? Although this plant does produce flowers it has never produced fruit or seed. The reason for this is that the plant is a triploid. This means it has three sets of chromosomes instead of the normal two. This renders the plant sterile. Other Tasmanian species, L. tinctoria and L. polymorpha are diploid (two sets of chromosomes), as are other species of the genus and the subfamily to which it belongs.
The only way it can reproduce itself is by vegetative means. It simply clones itself. When it gets old and falls down, it puts out new suckers and grows up again. It is still theoretically the same plant.
In fact latest research has shown that Kings lomatia is all one single clone. There is no genetic diversity within the population. This means that all the individual Kings lomatia plants are genetically identical.
The oldest plant clone in the world! Amazingly, this plant clone has been around for at least 43,600 years. At Melaleuca Inlet some Pleistocene fossils of Lomatia leaves were found that appear to be L. tasmanica. Radio-carbon dating gave a minimum age of 43,600 years for the layer in which the leaf fossil was found.
It covered tons of topics never discussed on the blog before: proposed improvements to Gmail (please!), the real original book title, using telephone vs. e-mail, principles and case studies, metrics (including exercise), analysis vs. intuition, the declining dollar and personal outsourcing & geoarbitrage, and much more.
The Canadian government moved Friday to ban polycarbonate infant bottles, the most popular variety on the market, after it officially declared one of their chemical ingredients toxic. The action, by the departments of health and environment, is the first taken by any government against bisphenol-a, or BPA, a widely used chemical that mimics a human hormone. It has induced long-term changes in animals exposed to it through tests.
A report in today's Science describes how researchers recorded the drainage of one such lake in Greenland. The lake was roughly 5.6 km2, but drained completely in less than an hour and a half. The lake's contents rapidly made their way down to the bottom of the ice sheet, 980 m below the surface. During this period, the average drainage rate was 8700 m3/s. For reference, the average flow rate for Niagara Falls is only 5700 m3/s.
I left my 9-year-old at Bloomingdale's (the original one) a couple weeks ago. Last seen, he was in first floor handbags as I sashayed out the door. Was I worried? Yes, a tinge. But it didn't strike me as that daring, either. Isn't New York as safe now as it was in 1963? It's not like we're living in downtown Baghdad.Growing up in Brooklyn, NY, I fondly remember wandering a distance of several miles at around the same age with my cousin Douglas.
Anyway, for weeks my boy had been begging for me to please leave him somewhere, anywhere, and let him try to figure out how to get home on his own. So on that sunny Sunday I gave him a subway map, a MetroCard, a $20 bill, and several quarters, just in case he had to make a call.
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- Quit buying vitamin supplements (see my Nutrition Manifesto Myth #4) and apply that cost savings to whole plant foods.
- Quit buying chips, soda, and packaged cookies and candy. Quit buying meat. Quit buying fast food. These things are costing you more than you may realize.
- Instead, buy grains and legumes, which are higher in protein than people expect, inexpensive, and they keep in storage for years. Try serving grains/legumes most nights a week instead of meat.
Dave Gray has a great video on the basic elements of visual language: Forms, fields, and flows. He also has a new website where he is consolidating his thoughts on visual thinking in preparation for a new book.
Jon Penn, a sixth grader at a small private school in Sherwood, Ark., is Exhibit A. When Victory Baptist School's previous network admin jumped ship, 11-year-old Jon decided to help out his mother, the school librarian who suddenly found herself responsible for computer support, by taking the reins.
Jon set to removing viruses from the antiquated machines and installed a firewall and filtering software as a stopgap measure while he looked forward to instituting centralized system management. Along the way he became what may well be the nation's youngest IT guy, and what's very obviously any geek parent's dream come true.
- Side trip (from OMSI): The Portland bridges. From OMSI it is a quick walk to the downtown bridges and more than once I've been offered tours of the towers and inner workings just for showing interest.
- Willamette Locks at Oregon City: River engineering is a big part of the economy in the region (for good and ill) and the Willamette Locks are a great, close in, example of how the rivers are operated for commerce. My kids got to operate the locks under the supervision of the lock master - smiles from ear to ear. Make sure the locks are in operation before visiting. The Army Corps of Engineers operates the locks only when they have the budget to do so. If your kids like this trip consider a visit to Bonneville.
- Arrival of the Jayhawks: A few times a year the Coast Guard Jayhawk rescue helicopters come up from Air Station Astoria to do a SAR demonstration. They always do a demonstration at the June Rose Festival Fleet Week but my favorite place to get up close and personal is the occasional open houses at Coast Guard Sector Portland. The demonstration is within about 100 feet of dock and you get a great view. At either of these events you can tour the USCGC Bluebell, our local buoy tender. (I'm a Coast Guard Auxiliarist so I have a bias on this one). Photos here.
- Evergreen Aviation Museum : Home of the Spruce Goose. If the kids are interested aviation this is trip you must take. They have wonderful collection of aircraft from the beginning of flight to WWII war birds to an SR-71 all under the longest wingspan of any aircraft ever built, Howard Hughes' Spruce Goose.
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